Numerous doctors interviewed for this story said the success rate for Tommy John surgery is now well above 90 percent. Many big-name pitchers, from Josh Johnson to Chris Carpenter to Tim Hudson in recent years, have returned as good as ever, but the first year back can often be a struggle. Every injury is different, but when a pitcher completely tears his elbow, a new ligament is needed. In some instances, said Dr. Brad Parsons of The Mount Sinai Medical Center, a tendon from a cadaver can be used as the new elbow ligament. Either way, the goal is "to restore the stability and strength of the elbow so it can withstand the pressure of throwing. Learn More